英语的词汇丰富多彩，但也给它的使用者带来选词上的种种难题。选词得当，则达意传神；选词不当，会造成误解。要想运用好英语词汇，就必须对它进行一番仔细的观察和研究。英语中大多数词都有本义即字面意义（ｄｅｎｏｔａｔｉｏｎ）和涵义（ｃｏｎｎｏｔａｔｉｏｎ）两层意义 The vocabulary of English is rich and colorful, but it also gives its users various problems in word selection. If the words are chosen properly, they will express themselves; if they are not properly chosen, they will cause misunderstandings. To make good use of English vocabulary, it must be carefully observed and studied. Most of the words in English have the two meanings of literal meaning: denotation and connotation.